1·The ancient-dream was finally realized in 1940 when a Russian engineer piloted a strange looking craft of steel tubing with a rotating fan on top.
这个古老的梦想终于在1940年实现了。当时，一名俄罗斯工程师驾驶了一艘外形奇特、顶部装有旋转风扇的钢管船。
2·The support structure to hold the sign up was custom fabricated from steel tubing and painted to match the dark trim of the building.
支撑整个标识的支架是标准配置的钢管，上过油漆，这样能让建筑上的黑色看起来协调一点。
3·This is made from a part which is machined up on the lathe and tapped for screwing into the valve-plate, and a short section of steel tubing.
这是由一个是加工上的车床和到阀板拧挖掘的一部分，以及钢管短节。
4·The airframe is built of steel tubing, with aluminum wings, for a basic empty weight of 628 pounds.
该型飞机采用了钢管机身框架，铝制机翼，基本型空重628磅。